Bharath 0xbharath

GitHub for Bug Bounty Hunters

GitHub repositories can disclose all sorts of potentially valuable information for bug bounty hunters. The targets do not always have to be open source for there to be issues. Organization members and their open source projects can sometimes accidentally expose information that could be used against the target company. in this article I will give you a brief overview that should help you get started targeting GitHub repositories for vulnerabilities and for general recon.

Mass Cloning

You can just do your research on github.com, but I would suggest cloning all the target's repositories so that you can run your tests locally. I would highly recommend @mazen160's GitHubCloner. Just run the script and you should be good to go.

$ python githubcloner.py --org organization -o /tmp/output

	from __future__ import print_function

	__author__ = 'Bharath'
	__version__ = "0.1.0"

	try:
	import psycopg2
	except ImportError:
	raise ImportError('\n\033[33mpsycopg2 library missing. pip install psycopg2\033[1;m\n')
	sys.exit(1)

	Python debugger:
	Stop programs mid execution
	Examine it line by line
	Look at the contents of the variable in the middle of the execution
	Any python script can be set to be debugged

	2 ways to start the debugger:
	import pdb; pdb.set_trace()
	python -m pdb script.py

	from ipaddress import ip_network, ip_address
	import json
	import requests
	import sys

	def find_aws_region():
	ip_json = requests.get('https://ip-ranges.amazonaws.com/ip-ranges.json')
	#ip_json = json.load(open('ip-ranges.json'))
	ip_json = ip_json.json()
	prefixes = ip_json['prefixes']

	/blog
	/blog/
	/blog/blog.rss
	/blog/page-data/
	/blog/page-data/app-data.json
	/blog/sw.js
	/blog/_wpeprivate/config.json
	/books
	/.bower.json
	/bower.json

	find-cert()
	{ curl -s https://certspotter.com/api/v0/certs?domain=$1 \| jq -c '.[].dns_names' \| grep -o '"[^"]\+"'; }

	find-subdomains-vt()
	{ curl -s https://www.virustotal.com/ui/domains/$1/subdomains\?limit\=$2 \| jq .data[].id; }

	SELECT distinct issuer_ca_id, COUNT() FROM certificate_identity ci WHERE ci.NAME_TYPE = 'dNSName' AND reverse(lower(ci.NAME_VALUE)) LIKE reverse(lower('%gov.in')) GROUP BY issuer_ca_id ORDER BY COUNT() desc;

	SELECT certificate_id,issuer_o,issuer_cn FROM ccadb_certificate WHERE certificate_id IN(SELECT distinct certificate_id FROM certificate_identity ci WHERE ci.NAME_TYPE = 'dNSName' AND reverse(lower(ci.NAME_VALUE)) LIKE reverse(lower('%appsecco.com')));

	SELECT distinct ca.name, COUNT(*) count FROM certificate_identity ci, ca ca WHERE ci.NAME_TYPE = 'dNSName' AND reverse(lower(ci.NAME_VALUE)) LIKE reverse(lower('%gov.in')) AND ca.id=ci.issuer_ca_id GROUP BY ca.name ORDER BY count desc;